Slide-rest eor lathes



C. VAN HORN.

Slide Rest.

Patented April 17, I855.-

NY PETERS. Phalolilhogmpher. Wnshinglnn. D. c.

CHESTER vA HoRN, on SPRINGFIELD, MASSACHUSETTS,

SLIDE-REST FOR LATHES.

f Specification of Letters PatentNo. 12,"?47, dated April 17, 1855. l

i i To all whomz'tlmay ooncem:

and StateofMassachusetts, have invented new and useful'j ImprovementinSlide-Rests View of myim provement. V y y a The natureof'mynnventlonconsists in Be it knownthatI, CHESTER VAN HORN,

of Springfield, in the: county of Hampden for Lathes; and I do herebydeclare that the followinghis a full, clear, and exactfdescription ofthe same, reference being had I to the annexed drawing, making a part of,this specification, said drawing beinga side a forming the tool blockoftwo parts,,and

connectingsaid parts together by a clove tail or in any proper manner sothat the upper part may slidenpon the lower part,

the faces of the twdparts that arein contact and connected beingin anoblique position and thereby causing as the. upper part is movedbackward and: forward, :the tool to be elevated or depresffiedas will behereafter fully shown and described.

To enableothers-skilled in theart to fully understand and construct myinvention I will proceed to describeit; g i A represents the bed of alatheconstrueted in the usual manner, and B is the carriage oflasliderest also raffusual construction and working on @waysor guides(a)on thebed 1n the ordinary manner; the carnage being movedlongitudinallykon thebed by the usual screw, The carriage B, is provided40 as being dividedby an oblique'cut into two parts and the obliquefaces are connected by through nut with transverse ways or guides onwhich the tool block C works: The tool block G is moved back and forthon the ways or guides (b), by a screw D; which works on the under sideof the tool block. l N

The tool block C is formed of 'two parts (0) (d) or the tool blockmay bedescribed a dove tailor in any other proper manner so n that theupperpart (0) mayslide or work Y 1 upon the lower part (d); The upperpart (0) *may be operatedfbya screWfE as shown the drawingor in anyother proper man- F is the tool stock in which the tool G is secured. aThe tool stock is secured to the upper surface of the part- (0) of thetool block and is of the usual construction and form.

Theobject of the invention will be read-v ily seen,'by operating thescrew E or an equivalent device, the part (0) of the tool block may bemoved forward and'down- Ward or backward and upward, and the tool G willof course be raised or lowered accordingly so as to act properly uponthe article inthe lathe, two positions of the tool are shown inthedrawingg one in red. The

other motions of the tool, are given in the usual manner as beforedescribed, viz, the tool block being moved bodily forward by the screwD; and the carriage B being moved longitudinally on the bed by a screwin the ordinary manner.

By the above improvement the tool is raised and lowered with thegreatest facility and in an extremely simple manner. There is noliability of any of the parts getting out of repair.

I do not claim the carriage B nor any mode of operating the same,neither do I claim the transverse movement of the tool block C on thecarriage B, for these are common to most slide rests, but

What I do claim as new and desire to secure by Letters Patent, is-

Forming the tool block C of two parts (a) (d) and connecting said partstogether by a dovetail or its equivalent so that the upper part (0) mayslide or work on the lower part (cl), the faces of the two parts (0)(d), that are connected being oblique or inclined as herein shown, andthe part (0) being moved or operated by a screw E or its equivalent forthe purpose of elevating or depressing the tool G as herein described;

CHESTER VAN- HORN.

Witnesses:

R. A; CHAPMAN,

F. CH MBERLAIN.

